Question 1

Acid-base indicators will change color when the amount of acid present changes.

Accepted Answer

A) True 
 B)False

Question 2

A solution with a pH of 3 has a hydronium ion concentration of

Accepted Answer

A)  10-3 mol/L. 
B)  103 mol/L. 
C)  10 mol/L. 
D)  -10 mol/L. 
A)  10-3 mol/L. 
B)  103 mol/L. 
C)  10 mol/L. 
D)  -10 mol/L.

Question 3

Phenolphthalein has often been used to monitor the progress of acid-base neutralization reactions. What color will phenolphthalein be if there is an excess of base present?

Accepted Answer

A)  colorless 
B)  green 
C)  pink 
D)  yellow 
A)  colorless 
B)  green 
C)  pink 
D)  yellow

Question 4

Which of the following is the correct balanced equation for the neutralization of barium hydroxide with sulfuric acid?

Accepted Answer

A)  Ba(OH)2 + H2SO4 → BaSO4 + 2 H2O 
B)  BaOH + H2SO4 → BaSO4 + 2 H2O 
C)  BaOH2  + H2SO4 → BaSO4 + H2O 
D)  Ba(OH)2 + 2 H2SO4 → Ba(SO4)2 + 2 H2O 
A)  Ba(OH)2 + H2SO4 → BaSO4 + 2 H2O 
B)  BaOH + H2SO4 → BaSO4 + 2 H2O 
C)  BaOH2  + H2SO4 → BaSO4 + H2O 
D)  Ba(OH)2 + 2 H2SO4 → Ba(SO4)2 + 2 H2O

Question 5

Calcium carbonate is a common antacid. A problem with regular use of calcium carbonate based antacids is they cause

Accepted Answer

A)  constipation. 
B)  diarrhea. 
C)  high blood pressure. 
D)  destruction of the stomach lining. 
A)  constipation. 
B)  diarrhea. 
C)  high blood pressure. 
D)  destruction of the stomach lining.

Question 6

A solution of toilet bowl cleaner has a pH of 9. The solution is

Accepted Answer

A)  weakly basic. 
B)  strongly basic. 
C)  weakly acidic. 
D)  strongly acidic. 
A)  weakly basic. 
B)  strongly basic. 
C)  weakly acidic. 
D)  strongly acidic.

Question 7

The acid in automobile batteries is

Accepted Answer

A)  hydrochloric acid. 
B)  nitric acid. 
C)  phosphorus acid. 
D)  sulfuric acid. 
A)  hydrochloric acid. 
B)  nitric acid. 
C)  phosphorus acid. 
D)  sulfuric acid.

Question 8

An unknown substance is added to a solution and the pH increases. The substance is best described as a(n)

Accepted Answer

A)  acid. 
B)  base. 
C)  salt. 
D)  solvent. 
A)  acid. 
B)  base. 
C)  salt. 
D)  solvent.

Question 9

A strong acid will not ionize completely in water.

Accepted Answer

A) True 
 B)False

Question 10

A salt that can conduct electricity when it is dissolved in water is a(n)

Accepted Answer

A)  buffer. 
B)  catalyst. 
C)  electrolyte. 
D)  indicator. 
A)  buffer. 
B)  catalyst. 
C)  electrolyte. 
D)  indicator.

Question 11

A buffer

Accepted Answer

A)  resists changes in pH when small amounts of a strong acid or a strong base are added. 
B)  is made up of a weak acid and its conjugate base. 
C)  is made up of a weak base and its conjugate acid. 
D)  All of the above are true. 
A)  resists changes in pH when small amounts of a strong acid or a strong base are added. 
B)  is made up of a weak acid and its conjugate base. 
C)  is made up of a weak base and its conjugate acid. 
D)  All of the above are true.

Question 12

Which is NOT a characteristic of bases?

Accepted Answer

A)  taste bitter 
B)  turn litmus red 
C)  react with acids to form salts 
D)  produce hydroxide ions when added to water 
A)  taste bitter 
B)  turn litmus red 
C)  react with acids to form salts 
D)  produce hydroxide ions when added to water

Question 13

Another name for NaOH is

Accepted Answer

A)  baking soda. 
B)  lime. 
C)  lye. 
D)  lysol. 
A)  baking soda. 
B)  lime. 
C)  lye. 
D)  lysol.

Question 14

When metal oxides react with water, the resulting solution is generally

Accepted Answer

A)  salty. 
B)  acidic. 
C)  neutral. 
D)  basic. 
A)  salty. 
B)  acidic. 
C)  neutral. 
D)  basic.

Question 15

Give an example of an amphiprotic compound.

Accepted Answer

A)  sulfuric acid 
B)  water 
C)  potassium chloride 
D)  ammonia 
A)  sulfuric acid 
B)  water 
C)  potassium chloride 
D)  ammonia

Question 16

A weak base

Accepted Answer

A)  is present in low concentration in solution. 
B)  is present in high concentration in solution. 
C)  ionizes only slightly in solution. 
D)  ionizes completely in solution. 
A)  is present in low concentration in solution. 
B)  is present in high concentration in solution. 
C)  ionizes only slightly in solution. 
D)  ionizes completely in solution.

Question 17

Which of the following is an example of a nonmetal oxide?

Accepted Answer

A)  SO2 
B)  LiOH 
C)  Na2O 
D)  H2SO4 
A)  SO2 
B)  LiOH 
C)  Na2O 
D)  H2SO4

Question 18

In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, HNO3, the coefficient of nitric acid is

Accepted Answer

A)  3. 
B)  2. 
C)  1. 
D)  4. 
A)  3. 
B)  2. 
C)  1. 
D)  4.

Question 19

A solution with a pH of 12 will be

Accepted Answer

A)  weakly basic. 
B)  strongly basic. 
C)  weakly acidic. 
D)  neutral. 
A)  weakly basic. 
B)  strongly basic. 
C)  weakly acidic. 
D)  neutral.

Question 20

Write the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid.

Accepted Answer

Ca(OH)₂ + 2

Exam 7: Acids and Bases

Acid-base indicators will change color when the amount of acid present changes.

A solution with a pH of 3 has a hydronium ion concentration of

Phenolphthalein has often been used to monitor the progress of acid-base neutralization reactions. What color will phenolphthalein be if there is an excess of base present?

Which of the following is the correct balanced equation for the neutralization of barium hydroxide with sulfuric acid?

Calcium carbonate is a common antacid. A problem with regular use of calcium carbonate based antacids is they cause

A solution of toilet bowl cleaner has a pH of 9. The solution is

The acid in automobile batteries is

An unknown substance is added to a solution and the pH increases. The substance is best described as a(n)

A strong acid will not ionize completely in water.

A salt that can conduct electricity when it is dissolved in water is a(n)

A buffer

Which is NOT a characteristic of bases?

Another name for NaOH is

When metal oxides react with water, the resulting solution is generally

Give an example of an amphiprotic compound.

A weak base

Which of the following is an example of a nonmetal oxide?

In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, HNO3, the coefficient of nitric acid is

A solution with a pH of 12 will be

Write the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid.

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In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, HNO₃, the coefficient of nitric acid is